#include<stdio.h>
int add(int i,int j)
{
    return i + j;
}
int main()
{
    int i =10;
    int j = 10;
   int tmp = add(i, j);
   printf("%d\n" , tmp);
   printf("hello world\n");
   printf("hello world\n");

   printf("hello world\n");
   printf("hello world\n");
    return 0;
}
